1,720,953 research outputs found
Organic Agriculture Promotion by Using Microbes for Soil Remained Agricultural Chemicals Remediation and Their Plant Growth Promotions, Case Study: Muang Kaen Pattana Municipality Chiang Mai Province
No full textThis study was to evaluate the effects of the agricultural chemicals usage on the environment in Muang Kaen Pattana municipality Chiang Mai province. Three hundred and nine farmers were interviewed. Data were collected by a semi-structured questionnaire. Level of agricultural chemicals residue and amount of bacteria in soil from chemical and non-chemical usage area were measured. The results of the soil samples showed that the number of bacteria from non-chemical usage area was higher than that of the chemical usage area. The nutrients in non-chemical usage area were similar to those of the chemical usage area, except potassium level was higher. The level of paraquat in chemical usage area was 5.47 mg/kg,(dw) and in non-chemical usage area was 5.61 mg/kg,(dw). The potential environmental risks of both soils classified by Hazard Quotient Equation (HQ) was rated as a moderate hazard (HQ 1.1-10). The contamination of agricultural chemicals presented in non-chemical farming may be contaminated from the rainwater. This effect counterfeit to the claim of non-chemical usage farming. Thus, the area for non-chemical usage farming should be managed to prevent this problem. Biological treatment is a process that can treat agricultural chemical contaminated in the environment. This process based on the ability of microbes in the soil to decompose agricultural chemicals and create a suitable environment for the growth of those microbes. The bacteria were sampled from Muang Kaen Pattana municipality, Chiang Mai province and screened bacterium. The potential isolates were examined for paraquat degradation by cultivation in medium contained paraquat as a sole carbon source. It was found that OSV02 isolate showed the highest growth level and highest paraquat degradability as 44.09%. Based on 16S rRNA gene sequence analysis, this isolate was identified as Bacillus aryabhattai.การเก็บข้อมูลการใช้สารเคมีในการควบคุมกำจัดศัตรูพืชในพื้นที่เทศบาลเมืองแกนพัฒนา จังหวัดเชียงใหม่ โดยการสุ่มเก็บข้อมูลตามพื้นที่ของเทศบาลเมืองแกนพัฒนา โดยให้กระจายครอบคลุม พื้นที่ส่วนใหญ่ โดยใช้แบบสอบถามแบบเปิดในการเก็บรวบรวมข้อมูลของเกษตรกรกลุ่มตัวอย่างในพื้นที่เทศบาลเมืองเมืองแกนพัฒนา จำนวน 309 คน ลักษณะทางกายภาพและเคมีของดินที่ไม่ใช้สารเคมีทางการเกษตรและใช้สารเคมีทางการเกษตร มีลักษณะทางคล้ายกัน จำนวนของจุลินทรีย์กลุ่มแบคทีเรียในดินจากแปลงข้าวที่ไม่ใช้สารเคมีทางการเกษตรมีจำนวนมากกว่าจุลินทรีย์กลุ่มแบคทีเรียในดินที่ใช้สารเคมีทางการเกษตรอย่างชัดเจน โดยมีจำนวนของจุลินทรีย์กลุ่มแบคทีเรียแตกต่างกันอยู่ 17.43 เท่า และแบคทีเรียในดินที่ไม่ใช้สารเคมีทางการเกษตรมีความหลากหลายที่มากกว่า และเมื่อทำการวิเคราะห์ตัวอย่างดินโดยใช้ HPLC พบว่า มีการปนเปื้อนของสารพาราควอตพาราควอตมีค่า 5.47-5.61 mg/kg ไกลโฟเซต มีค่าน้อยกว่า 0.03 mg/kg และสารกลุ่มคาร์บาเมท และตรวจไม่พบสารกลุ่มคาร์บาเมท โดยแปลงที่ไม่ใช้สารเคมีทางการเกษตรสามารถพบสารพารา ควอตตกค้างในดิน แม้ว่าเกษตรกรผู้ผลิตจะไม่ได้ใช้สารเคมี อาจเนื่องมาจากการปนเปื้อนจากพื้นที่ใกล้เคียงที่มีการใช้สารเคมีทางการเกษตร และการไหลของสารเคมีตามเส้นทางน้ำ และในอดีตมีการใช้สารเคมีทางการเกษตรกันอย่างกว้างขวางและต่อเนื่องตลอดระยะเวลาไม่น้อยกว่า 50 ปี จึงมีความเป็นไปได้ที่จะตรวจพบการตกค้างของสารเคมีการเกษตรตกค้างในแปลง ดังนั้นการกล่าวอ้างว่า ผลผลิตการเกษตรใดๆก็ตามว่าปลอดการปนเปื้อนจากสารเคมีจึงเป็นการกล่าวอ้างที่อาจจะเกินจริง จากนั้นได้ทำการศึกษาความสามารถย่อยพาราควอต โดยเติมพาราควอตความเข้มข้น 50 ppm เป็นแหล่งคาร์บอน เขย่าที่ความเร็วรอบ 150 รอบต่อนาที บ่มเชื้อที่ 30 องศาเซลเซียส เป็นเวลา 72 ชั่วโมง เก็บตัวอย่างทุก 12, 24, 48 และ 72 ชั่วโมง พบว่าได้เชื้อแบคทีเรียที่มีประสิทธิภาพในการย่อยสลายสูงที่สุด คือ OSV02 มีประสิทธิภาพในการย่อยสลายสูงที่สุดเท่ากับ 44.09 ที่ระยะเวลา 72 ชั่วโมง และยังสามารถส่งเสริมการเจริญของพืชได้อีกด้วย และเมื่อทำการจำแนกชนิดแบคทีเรียโดยการใช้เทคนิคทางอณูวิทยา โดยข้อมูลของ rDNA พบว่าใกล้เคียงกับ Bacillus aryabhattai.สำนักงานคณะกรรมการวิจัยแห่งชาติ (วช.
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
- …
